The following highways are numbered 68:

• Channel Highway (Tasmania)
• NSW (Multiple routes)

• Alberta Highway 68
• Manitoba Highway 68
• Ontario Highway 68

• Chile Route 68

• EO68 road

• National Highway 68 (India)

• Gukjido 68

• N68 highway (Philippines)

• National road 68

• Interstate 68
  • Interstate 68 (Maryland 1975) (former proposal)
• U.S. Route 68
• Alabama State Route 68
• Arizona State Route 68
• Arkansas Highway 68 (former)
• California State Route 68
• Colorado State Highway 68 (former)
• Connecticut Route 68
• Florida State Road 68
  • County Road 68 (Okeechobee County, Florida)
  • County Road 68 (St. Lucie County, Florida)
• Georgia State Route 68
  • Georgia State Route 68 (1921–1932) (former)
• Illinois Route 68
• Indiana State Road 68
• Iowa Highway 68 (former)
• K-68 (Kansas highway)
• Louisiana Highway 68
  • Louisiana State Route 68 (former)
• Maryland Route 68
• Massachusetts Route 68
• M-68 (Michigan highway)
• Minnesota State Highway 68
  • County Road 68 (Ramsey County, Minnesota)
• Missouri Route 68
  • Missouri Route 68 (1922) (former)
• Nebraska Highway 68
• Nevada State Route 68 (former)
• New Jersey Route 68
  • County Route 68 (Bergen County, New Jersey)
• New Mexico State Road 68
• New York State Route 68
  • County Route 68 (Chautauqua County, New York)
  • County Route 68 (Dutchess County, New York)
  • County Route 68 (Erie County, New York)
  • County Route 68 (Herkimer County, New York)
  • County Route 68 (Oneida County, New York)
  • County Route 68 (Putnam County, New York)
  • County Route 68 (Rensselaer County, New York)
  • County Route 68 (Rockland County, New York)
  • County Route 68 (Steuben County, New York)
  • County Route 68 (Suffolk County, New York)
  • County Route 68 (Westchester County, New York)
• North Carolina Highway 68
• North Dakota Highway 68
• Ohio State Route 68 (1923) (former)
• Pennsylvania Route 68
• South Carolina Highway 68
• Tennessee State Route 68
• Texas State Highway 68 (proposed)
  • Texas State Highway 68 (pre-1942) (former)
  • Texas State Highway Loop 68 (former)
  • Texas State Highway Spur 68 (former)
  • Farm to Market Road 68
  • Texas Park Road 68
• Utah State Route 68
• Vermont Route 68 (former)
• Virginia State Route 68
• West Virginia Route 68
• Wisconsin Highway 68

Territories

• U.S. Virgin Islands Highway 68

• A68 (disambiguation)